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Silicon steel lamination, also referred to as electrical steel lamination, is produced through the use of silicon steel sheets. It is a ferrosilicon soft magnetic alloy with extremely low carbon content (0.08%) and high silicon content (0.5%-4.5%). Adding silicon can increase the resistivity and maximum magnetic permeability of iron, and reduce coercive force, core loss (iron loss), and magnetic aging. Nowadays, it has become an important metal functional material used in power, electronics, and military industries.
According to different classifications, silicon steel lamination can be divided into different types. Let’s have a look now.
Manufacturing Process
According to the manufacturing process, it can be divided into hot rolled silicon steel lamination and cold rolled silicon steel lamination.
Grain Orientation
According to grain orientation, it can be divided into non-oriented silicon steel lamination and oriented silicon steel lamination. It should be noticed that both are made by cold rolling process.
Silicon Content
According to silicon content, it can be divided into low silicon steel lamination (silicon content ＜2.8%) and high silicon steel lamination (silicon content 2.8％-4.8％).
Usage
According to usage, it can be divided into: silicon steel lamination for the motor and silicon steel lamination for the transformer.
Working Condition
According to the working conditions, it can be divided into:
silicon steel lamination used under strong magnetic fields (mostly used in the electric power industry, which is the most common and largest use);
silicon steel lamination used under weak magnetic fields (mostly used in the telecommunications industry).
| Product Name | silicon steel lamination |
| Thickness | ＜1mm |
| Width | 200-800mm |
| Length | ≤2.0 m |
| Applications | electrical applications, household appliances, automobile applications, etc |
1. Low iron loss. This is the most important indicator of the quality of silicon steel laminations. Countries all over the world will classify silicon steel grades according to the iron loss value. The lower the iron loss, the higher the grade, and the higher the quality.
2. High magnetic induction intensity. Silicon steel laminations can obtain higher magnetic induction under the same magnetic field. Therefore, the size and weight of the motor or transformer core made with them are relatively small, which effectively can save silicon steel laminations, copper wires, and insulating materials.
3. Good shape: it has a flat surface, uniform thickness, and high stacking, which can be judged from the surface texture of silicon steel lamination in most cases. Besides, using cold-rolled silicon steel lamination instead of hot-rolled silicon steel lamination to manufacture transformers can reduce their weight and volume by 0%-25%.
4. High magnetic permeability. This product has high magnetic permeability and poor electrical conductivity, making it ideal for electrical applications.
5. High electrical resistance. It helps minimize the flow of eddy currents and subsequent power loss.
6. Low coercivity. Low coercivity helps to minimize hysteresis losses. And there are no magnetic aging.
7. Excellent insulation film performance. Film coatings are applied to electrical steel lamination to enhance its performance, protect against corrosion, improve film punching property, and act as a lubricant during die cutting.
8. Cost-effectiveness. Silicon steel is low in price and suitable for mass production. At Gnee Steel, our silicon steel products are available in a variety of thicknesses, widths, lengths, grades, and shapes, allowing you to tailor the material for your specific application.
Nowadays, silicon steel lamination is an indispensable and important magnetic material used in the power, electronics, military, telecommunications, and instrument industries. Its applications mainly include:
Iron cores that transformers, motors, and generators would need;
Motion-control products that require increased performance;
Continuous-duty and high-efficiency rotating machinery;
Automotive applications;
High-performance parts;
Pole pieces;
Corrosion control applications.
